Local Interstellar Cloud
The local interstellar cloud, sometimes called local Plush is a interstellar cloud measuring about 30 light-years wide. The solar system currently moves about, since its spread between 40 000-150 000 years. It should come out in 10 000-20 000 years. The cloud has a temperature of 6000 C, nearly the same temperature as the surface of the Sun. With 0.26 atoms / cm 3, its density is very low, roughly 1 / 5 th the density of the interstellar medium galaxy. However, it is twice the density of gas from the Local Bubble , a low-density interstellar medium with the Local Cloud, a small area more dense. In comparison, the atmosphere is, for the standard conditions of temperature and pressure , consisting of 10 10 19 molecules / cm 3.
The cloud slides out of the Scorpius-Centaurus Association (en) , a stellar association which is a region of star formation .
Summary |
References
- (In) This article is partially or entirely from the article in English entitled " Local Interstellar Cloud (see the list of authors )
- "Astronomy Picture of the Day" , Science, NASA
- "Near-Earth Supernovas" , Science, NASA
See also
Bibliography
- (In) "Near-Earth Supernovas" , Science, NASA
- (In) "A Breeze from the Stars" , Science NASA (interstellar wind coming from Ophiuchus rich in helium )
- (In) "Astronomy Picture of the Day" , Science, NASA
- (In) "Local Chimney and superbubble"
- (In) Mark Anderson, "Do not Stop Till You Get To The Fluff" New Scientist , no. 2585, January 6, 2007, p. 26-30
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